Foldable shelter



FIG. 1 is a front and side perspective view of a foldable shelter showing my new design;

FIG. 2 is a front view thereof, the rear view thereof being a mirror image of that which is shown;

FIG. 3 is a left side view thereof, the right side view thereof being a mirror image of that which is shown;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof.

The broken lines represent portions of the article that form no part of the claim. 

The ornamental design for a foldable shelter, as shown and described. 